Power supply device and electronic apparatus

Abstract

A power supply device includes: a power supply connector which receives supply of power and supplies the power to the outside thereof; plural OBPs which apply voltages to supply power, to each of processing devices to perform processing and to include different types of application voltages planned to be applied, and each of the plural OBPs is supplied with power directly or indirectly from the power supply connector; and a power supply control section that increases and decreases supplying power which each of the OBPs supplies to one processing device out of the plural processing devices according to an extent of a processing load in the one processing device as well as according to an extent of a processing load in another processing device whose application voltage is different from that of the one processing device.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This is a continuation application of PCT / JP2007 / 068194, filed on Sep. 19, 2007.TECHNICAL FIELD[0002]The embodiment discussed herein is related to a power supply device that supplies power to a processing device and an electronic apparatus mounted with the power supply device.BACKGROUND ART[0003]Conventionally, in an electronic apparatus such as a communication device and a server device, there is provided a power supply device that supplies power to an IC or the like that executes various types of processing. Such power supply device is required of supplying stable power consistently, and in particular, required of adjusting an output voltage that is outputted to an IC or the like to be constant.[0004]FIG. 1 schematically illustrates a structure of a power supply device that supplies power to an electronic apparatus.[0005]A power supply device 10 illustrated in FIG. 1 is a power supply device employing an analog control method in which an...

AI Technical Summary

Benefits of technology

[0019]The power to be supplied to the processing device by one power supply is affected by a processing load in another processing device whose application voltage is different from that of the one processing device, via the power supply section. As a result, when the power to be supplied is affected by a fluctuation of the load in another processing device that is not a power supply target, proper power supply may not be maintained. According to the power supply device of the aspect of the present invention, the power control is performed in accordance with an extent of a processing load in another processing device that is not the power supply target as well. As a consequence, for example, by increasing power to be supplied by one power supply when a load in another processing device that is not the power supply target is large, it is possible to control such that proper power supply is maintained by the power supply. Or conversely, by decreasing power to be supplied by one power supply when a load in another processing device that is not the power supply target is large, it is possible to control so as to help maintaining proper power supply to another processing device that is not the power supply target. And thus it is possible to effectively avoid the above-described problem. Namely, according to the power supply device of the aspect of the present invention, it is possible to preferably supply power to each of various kinds of components, an IC and the like included in an electronic apparatus (processing device).

[0030]According to the aspect of the present invention, it is possible to obtain a power supply device capable of supplying power adequately to various kinds of components, an IC and the like included in an electronic apparatus, respectively and an electronic apparatus mounted with the power supply device.

Problems solved by technology

However, in a communication device or a server device among the electronic apparatuses, there is a case in which a load in the IC or the like that executes communication processing abruptly fluctuates in synchronization with a state of communications traffic, which makes it difficult to absorb abrupt fluctuations of load in such a local place under an overall control by a single power supply device.

However, even if the voltage to be applied to the various kinds of components, the IC and the like is controlled individually by the technique disclosed in the U.S. Pat. No. 6,646,425, in a case where fluctuations of load in a component that adjoins a component targeted for controlling by a power supply device are too large, there often occurs a problem that the power supply device may not be able to maintain proper power supply to the control target, by being affected by the fluctuations of load in other component that is not targeted for controlling.

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